update performance_schema.setup_timers
set timer_name='CYCLE' where name="wait";
Warnings:
Warning	1681	'performance_schema.setup_timers' is deprecated and will be removed in a future release
update performance_schema.setup_timers
set timer_name='NANOSECOND' where name="stage";
Warnings:
Warning	1681	'performance_schema.setup_timers' is deprecated and will be removed in a future release
update performance_schema.setup_timers
set timer_name='NANOSECOND' where name="statement";
Warnings:
Warning	1681	'performance_schema.setup_timers' is deprecated and will be removed in a future release
update performance_schema.setup_timers
set timer_name='MICROSECOND' where name="transaction";
Warnings:
Warning	1681	'performance_schema.setup_timers' is deprecated and will be removed in a future release
update performance_schema.setup_timers
set timer_name='MICROSECOND' where name="idle";
Warnings:
Warning	1681	'performance_schema.setup_timers' is deprecated and will be removed in a future release
select * from performance_schema.setup_timers;
NAME	TIMER_NAME
idle	MICROSECOND
wait	CYCLE
stage	NANOSECOND
statement	NANOSECOND
transaction	MICROSECOND
Warnings:
Warning	1681	'performance_schema.setup_timers' is deprecated and will be removed in a future release
select * from performance_schema.setup_timers
where name='Wait';
NAME	TIMER_NAME
wait	CYCLE
Warnings:
Warning	1681	'performance_schema.setup_timers' is deprecated and will be removed in a future release
select * from performance_schema.setup_timers
where timer_name='CYCLE';
NAME	TIMER_NAME
wait	CYCLE
Warnings:
Warning	1681	'performance_schema.setup_timers' is deprecated and will be removed in a future release
insert into performance_schema.setup_timers
set name='FOO', timer_name='CYCLE';
ERROR 42000: INSERT command denied to user 'root'@'localhost' for table `performance_schema`.`setup_timers`
update performance_schema.setup_timers
set name='FOO';
ERROR HY000: Invalid performance_schema usage
update performance_schema.setup_timers
set timer_name='MILLISECOND';
Warnings:
Warning	1681	'performance_schema.setup_timers' is deprecated and will be removed in a future release
select * from performance_schema.setup_timers;
NAME	TIMER_NAME
idle	MILLISECOND
wait	MILLISECOND
stage	MILLISECOND
statement	MILLISECOND
transaction	MILLISECOND
Warnings:
Warning	1681	'performance_schema.setup_timers' is deprecated and will be removed in a future release
update performance_schema.setup_timers
set timer_name='CYCLE';
Warnings:
Warning	1681	'performance_schema.setup_timers' is deprecated and will be removed in a future release
delete from performance_schema.setup_timers;
ERROR 42000: DELETE command denied to user 'root'@'localhost' for table `performance_schema`.`setup_timers`
delete from performance_schema.setup_timers
where name='Wait';
ERROR 42000: DELETE command denied to user 'root'@'localhost' for table `performance_schema`.`setup_timers`
LOCK TABLES performance_schema.setup_timers READ;
UNLOCK TABLES;
LOCK TABLES performance_schema.setup_timers WRITE;
UNLOCK TABLES;
update performance_schema.setup_timers
set timer_name='CYCLE' where name="wait";
Warnings:
Warning	1681	'performance_schema.setup_timers' is deprecated and will be removed in a future release
update performance_schema.setup_timers
set timer_name='NANOSECOND' where name="stage";
Warnings:
Warning	1681	'performance_schema.setup_timers' is deprecated and will be removed in a future release
update performance_schema.setup_timers
set timer_name='NANOSECOND' where name="statement";
Warnings:
Warning	1681	'performance_schema.setup_timers' is deprecated and will be removed in a future release
update performance_schema.setup_timers
set timer_name='MICROSECOND' where name="transaction";
Warnings:
Warning	1681	'performance_schema.setup_timers' is deprecated and will be removed in a future release
update performance_schema.setup_timers
set timer_name='MICROSECOND' where name="idle";
Warnings:
Warning	1681	'performance_schema.setup_timers' is deprecated and will be removed in a future release
select * from performance_schema.setup_timers;
NAME	TIMER_NAME
idle	MICROSECOND
wait	CYCLE
stage	NANOSECOND
statement	NANOSECOND
transaction	MICROSECOND
Warnings:
Warning	1681	'performance_schema.setup_timers' is deprecated and will be removed in a future release
#
# MDEV-25325 column_comment for performance_schema tables
#
select column_name, column_comment 
from information_schema.columns 
where table_schema='performance_schema' and table_name='setup_timers';
column_name	column_comment
NAME	Type of instrument the timer is used for.
TIMER_NAME	Timer applying to the instrument type. Can be modified.